This thread is full of fail.
firstly, Zelda is a stylized game, it doesn't try to be realistic, notice how the water and fire are highly stylized. and if I remember correctly, when you sail to one end, you reach the other, so this world would be an infinite plane loop. Secondly, you guys are mad tripping. I seriously doubt that the Japenese people who made the game have heard of you guys. you guys are a teeny tiny niche of society, and if they have heard of you, I doubt any of the production team decided to make the world flat for your cause. You guys are majorly tripping. Some people might believe that the moon is evil, does that mean that Majora's mask was for the lunatic clan? No
also, clearly the game area isn't very big, in one mile it would only drop 8inches. and the game is hardly more than 5 miles long, if that. Furthermore, I believe in the official artwork there was a pic showing a globular world.
TL;DR
In the real world, they don't know you, they don't like you, they don't love you or your cause. Pretending otherwise is ridiculous. In the end you will have not impact mainstream society in the least bit, enjoy your fail.